| ⇦ | 
| ⇨ |
The correct order of the decreasing ionic radii among the following isoelectronic species are :
Options
(a) Ca²⁺ > K⁺ > S²⁻ > Cl⁻
(b) Cl⁻ > S²⁻ >Ca²⁺ > K⁺
(c) S²⁻ > Cl⁻ >K⁺ >Ca²⁺
(d) K⁺ > Ca²⁺ > Cl⁻ > S²⁻
Correct Answer:
S²⁻ > Cl⁻ >K⁺ >Ca²⁺
Explanation:
Among the isoelectronic species, size increases with the increase in negative charge. Thus S has the highest negative charge and hence largest in size followed by Cl, K and Ca
Related Questions: - Element having atomic no.of 56 belongs to which of the following block
- The boiling point of heavy water is
- A solution with pH = 2 is more acidic then one with a pH = 6 , by a factor
- The Formation of the oxide ion, O²⁻ from oxygen atom requires first an exothermic
- Which one of the following does not react with water even under red hot condition
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Classification of Elements and Periodicity
(94)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Element having atomic no.of 56 belongs to which of the following block
- The boiling point of heavy water is
- A solution with pH = 2 is more acidic then one with a pH = 6 , by a factor
- The Formation of the oxide ion, O²⁻ from oxygen atom requires first an exothermic
- Which one of the following does not react with water even under red hot condition
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Classification of Elements and Periodicity (94)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply